in a village in karnataka, people started cultivating crops all ariund a lake which was always filled with water. they added fertilizers to their field in order to enhance the yield. soon they discovered that the water body was completely covered with green floating plants and fishes started dying in large numbers. analyse the situation and give reasons for excessive growth of plants and death of fish in the lake.
Answers
There are many reasons for this
using more fertilizers is very dangerous.
if we use in more quantity mixes with water
Next slowly water will be polluted and fishes and plants die
According to the circumstances mentioned in the question the reason of excessive plant growth and death of fish,is the excessive usage of artificial chemical fertilizers.
These artificial fertilizers should be used in a controlled manner, excessive usage of these fertilizers can affect the natural ecosystem of the harvesting land.
Similarly, in this condition the excessive usage of fertilizers contaminated the harvesting soil and then the contamination reached the nearby water bodies.
This water contamination helped the excessive growth of plants and became the reason behind the abnormal death of the fishes.